Segmented Baler Stripper Roll with Cam Plates
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Solution Overview
Problem
Existing round balers face issues with wrapping material, such as net or plastic film, becoming entangled around the stripper roll, especially in wet conditions, which affects the efficiency of bale formation and handling.
Innovation Solution
The implementation of stationary plates with cam-like extensions between the segments of the stripper roll prevents wrapping material from wrapping around the roll by guiding it onto the bale, ensuring the material is securely attached to the rotating bale without getting stuck on the roll.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wrapping material is inserted directly above the stripper roll, then the material can be easily positioned for wrapping, but the wrapping material becomes entangled around the stripper roll
Solution Approach 1:
The stripper roll is divided into multiple segments with gaps between them. Stationary plates are mounted in these gaps, creating a segmented structure that allows wrapping material to pass through while preventing it from wrapping around the roll itself. The segments are arranged to guide material onto the bale while the stationary plates act as barriers.
Solution Approach 2:
Stationary plates with cam-like extensions are introduced as intermediary elements between the stripper roll and the wrapping material. These plates extend into the gaps between segments and serve as mediators that guide the wrapping material away from the roll surface and onto the bale, preventing direct contact and entanglement.
2Object-affected harmful factors
If knives are moved out of the baling chamber to avoid cutting wrapping material, then cutting of wrapping material is prevented, but wrapping material still becomes wrapped around the stripper roll
Solution Approach 1:
The stripper roll structure is segmented with gaps between segments, and stationary plates are mounted in these gaps. This segmentation creates a structure where the wrapping material can pass through the gaps and be guided by the stationary plates without contacting the roll surface, eliminating the problem of material wrapping around the roll even when knives are retracted.
Solution Approach 2:
Stationary plates with cam-like extensions serve as intermediary elements that guide the wrapping material away from the stripper roll. These plates prevent direct contact between the material and the roll, ensuring that even when knives are moved out, the material cannot wrap around the roll.
3Ease of operation
If scraping mechanisms are used to remove crop material from rolls, then crop sticking is reduced, but these mechanisms are ineffective for removing web material wrapped around the roll
Solution Approach 1:
The stripper roll is segmented with gaps between segments, and stationary plates are mounted in these gaps. This structure prevents web material from wrapping around the roll in the first place by guiding it through the gaps and onto the bale. The segmentation creates a physical structure that web material cannot conform to, unlike continuous roll surfaces.
Solution Approach 2:
Stationary plates with cam-like extensions act as intermediaries that actively guide wrapping material away from the stripper roll surface. These plates prevent web material from adhering to or wrapping around the roll, addressing the limitation of scraping mechanisms which can only remove material after it has already stuck.
Data Source
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AI summary
According to the invention stationary plates (103) are mounted in the spaces between the segments (100) of roll (27). At least one of the plates (103) comprising a cam-like extension (105), protruding from the roll surface for preventing wrapping material from wrapping around the roll (27).